Necessary Emojis — 2,538 original stickers for Messages

Necessary Emojis is a sticker app for the iPhone and iPad Messages app, and from iOS 17 its stickers also work from the system keyboard in other apps. It includes 2,538 original stickers across 11 packs and 61 subcategories, plus Browse, which sorts every sticker by what it communicates across 12 expression filters and 61 sub-filters. 72 stickers are free. All Access unlocks the lot with a one-off purchase — no subscription.